#include <pthread.h>

class mutex
{
public:
    mutex(pthread_mutex_t *lock)
    :_lock(lock)
    {}

    void Lock()
    {
        pthread_mutex_lock(_lock);
    }

    void unLock()
    {
        pthread_mutex_unlock(_lock);
    }

private:
    pthread_mutex_t* _lock;
};

class LockGuard
{
public:
    LockGuard(pthread_mutex_t* lock)
    :_mutex(lock)
    {
        _mutex.Lock();
    }

    ~LockGuard()
    {
        _mutex.unLock();
    }

    
private:
    mutex _mutex;
};